autonomic nervous system

Definition from Glossary

The part of the nervous system that enervates the cardiovascular, digestive, reproductive, and respiratory organs. It operates outside of consciousness and controls basic life-sustaining functions such as heart rate, digestion, and breathing. It includes the sympathetic nervous system and the parasympathetic nervous system

Pronunciation
ô′ta-no˘m′i˘k nûr′vus si˘s′tam